You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League:       Green Monstah Dynasty League (GMDL)      (ID: 1a1km)
    Conference: GMDL                                     (ID: d14kg) (Sort: Conf) (Playoffs: 4)
      Division: Fisk Pole                                (ID: d14kh) (Sort: Div) (Playoffs: 1)
        Team:   Boston Americans             (Americans) (ID: t1sa5)
        Team:   Toronto Blue Jays            (Blue Jays) (ID: t1sa6)
        Team:   Milwaukee Brewers            (Brewers)   (ID: t1sa7)
        Team:   Philadelphia Phillies        (Phillies)  (ID: t1saa)
        Team:   Detroit Tigers               (Tigers)    (ID: t1sae)
        Team:   Chicago White Sox            (White Sox) (ID: t1sag)
      Division: Pesky Pole                               (ID: d14ki) (Sort: Div) (Playoffs: 1)
        Team:   Cleveland Indians            (Indians)   (ID: t1sa8)
        Team:   Washington Nationals         (Nationals) (ID: t1sa9)
        Team:   Pittsburgh Pirates           (Pirates)   (ID: t1sab)
        Team:   Tampa Bay Rays               (Rays)      (ID: t1sac)
        Team:   Boston Red Sox               (Red Sox)   (ID: t1sad)
        Team:   Minnesota Twins              (Twins)     (ID: t1saf)
  Kind: pro
  Sport: baseball
  Gender: male
  Country: 
  State: 
  Level: A
  Season: 2017 (current: True)
  Author: Daniel Garrett
  Note: 
  LotteryNote: This isn't your lottery pick because it does not factor in ping pong balls.<br/>It's the final seed that gets you the ping pong balls.<br/>The top 16 seeds are wrong, just ignore them for now.
LeagueEnd

SortBegin
Div:
IfSomeTiesBrokenReturnHere,
Average Points,
Average Points HeadToHead,
If [(All=SameParent) Average Points SameParent],
Average Points SameGrandParent,
Average Points PlayoffEligible SameGrandParent,
If [(Size=2) Average Points PlayoffEligible DifferentGrandParent],
GoalsDelta,
DrawLots

Conf:
(Side) MoveClinchedToFront,
Seed [(4-End) Call Div][(1-4) Call Top4]

Top4:
IfSomeTiesBrokenReturnHere,
Average Points,
Least PositionInParent,
Average Points HeadToHead,
If [(All=SameParent) Average Points SameParent],
Average Points SameGrandParent,
Average Points PlayoffEligible SameGrandParent,
If [(Size=2) Average Points PlayoffEligible DifferentGrandParent],
GoalsDelta,
DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0.05
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagorean
  WeightExponent:  14
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: away
4/2/17    7:30 PM   Red Sox     271-203   Nationals   (ID: g1u4m8)
4/2/17    7:30 PM   Indians     317-325   Pirates     (ID: g1u4m9)
4/2/17    7:30 PM   Brewers     169-179   Tigers      (ID: g1u4ma)
4/2/17    7:30 PM   Rays        275-166   Twins       (ID: g1u4m7)
4/2/17    7:30 PM   Blue Jays   284-265   White Sox   (ID: g1u4mb)
4/10/17   7:30 PM   Brewers     305-271   Blue Jays   (ID: g1u4mc)
4/10/17   7:30 PM   Twins       250-169   Nationals   (ID: g1u4md)
4/10/17   7:30 PM   Rays        191-247   Pirates     (ID: g1u4me)
4/10/17   7:30 PM   Indians     260-361   Red Sox     (ID: g1u4mf)
4/10/17   7:30 PM   Phillies    195-310   Tigers      (ID: g1u4mg)
4/10/17   7:30 PM   Americans   164-200   White Sox   (ID: g1u4mh)
4/17/17   7:30 PM   Tigers      230-217   Americans   (ID: g1u4mi)
4/17/17   7:30 PM   White Sox   277-298   Brewers     (ID: g1u4mj)
4/17/17   7:30 PM   Nationals   281-192   Indians     (ID: g1u4mk)
4/17/17   7:30 PM   Blue Jays   294-225   Phillies    (ID: g1u4mm)
4/17/17   7:30 PM   Red Sox     226-194   Rays        (ID: g1u4mn)
4/17/17   7:30 PM   Pirates     218-232   Twins       (ID: g1u4mp)
4/24/17   7:30 PM   Tigers      123-251   Blue Jays   (ID: g1u4mq)
4/24/17   7:30 PM   Americans   351-257   Brewers     (ID: g1u4mr)
4/24/17   7:30 PM   Twins       250-266   Indians     (ID: g1u4ms)
4/24/17   7:30 PM   White Sox   258-202   Phillies    (ID: g1u4mt)
4/24/17   7:30 PM   Nationals   289-179   Rays        (ID: g1u4mu)
4/24/17   7:30 PM   Pirates     187-236   Red Sox     (ID: g1u4mv)
GamesEnd