....help warm up pitchers between innings, and get another 15% raise!
'tradition' aside, my general objection would be that I have enough to do already without taking on the coaches' and scorer's jobs also. Do you appreciate and seek out opportunities to do 3-4 other peoples' jobs in additional to your own at your place of employment?
I would say my 'employers' at the field deserve my best umpiring effort and concentration on matters that ONLY I can do (rules, game management, playing conditions, strikes/balls, etc). That can be degraded by these other distractions, esp if I have to invent methods to track them :eyeroll: