First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups
The future looked bright for the format at one point, but Star City Games cut their support for Legacy on their Open circuit in 2015 and there are fewer and fewer Legacy GPs as the years pass
If you go straight red, youre missing out on blue counterspells, greens great creatures, blacks unconditional removal, and so on
I should also point out that we did an uncommon creature cycle where you can reveal a creature card or pay extra mana, except this version uses behold to allow you to get the discount if you have the proper creature type on the battlefield
With a little deck manipulation, you can easily get a good number of cards off the top of your deck with minimal life lost