Why will Hashem not uproot them from the Mizbe'ach?
Refer to 2:33:2:1.
Malbim: Do not think that after your seed ceases to be Shoftim and Chachamim, they will have another income. No! They will be lowly servants of the Mizbe'ach.
What is "Lichlos Es Einecha"?
Radak: This refers to your seed, in the future. Their eyes will pine away, seeing a Kohen over them. This is a bigger punishment than dying out; this is why it says "Lo Achris me'Im Mizbechi." This is like David said "Al Tahargem Pen YIshkechu Ami Hani'emo v'Cheilcha v'Horidemu" (Tehilim 59:12); it is a bigger Chidush punishment to live and see their evil. Also Moshe said "Hargeni Na Harog
What is "v'La'adiv"?
Rashi: This is like v'Lad'iv (to make mourn). Radak - the Targum says so. This is like the Targum of "u'Medivos Nafesh" (Vayikra 26:16).
What is "Yamusu Anashim"?
Rashi: They will die young. 1 Mourning over a youth cannot be compared to (is far worse than) mourning over a baby.
Radak: "Ba va'Anashim" (17:12) means elders, like "ba'Anashim ha'Zekenim" (Yechezkel 9:6); eadch is explained according to its place (context).
What is "Marbis Beisecha"?
Radak: This is [children that you raised,] like "Tipachti v'Ribisi" (Iyov 2:22).