would it be worth..... (in General)

I was wondering if its worth investing my money in hiring a new minion and if so any suggestions?
btw by the time I can afford it its going to cost me near 6 million

don't hire

better sooner rather than later, mines at about 30mill now and by the time I get the cash it'll be closer to 35mill at least and there'll always come a point where single minion doesn't quite compete due to lack of spell/skill slots.

It really depends on your strat....If you want to have say 1 big damage minion and a familiar then I would reccomend waiting as long as you can afford. If you run a team that relies on EO or ED then hiring sooner isn't so bad. But if your strat is an offensive one then I reccomend not hiring

it all depends on how you want to deal with future exp concentration. If you want the spread exp, you should definitely do it now. But in most cases, exp concentration is pretty gold.

are you making a run for the top? If so you should hire eventually but if you're not then I wouldn't reccommend it.

I'd say hire if you feel you'll want another minion... ever... XP concentration/dilution is a moot point unless you run a familiar-based strategy as you can manipulate your XP in any way you see fit by fighting with a RoE ^_^